Machine for making reenforced box trays



Dec. 26, 1922. 1,439,850

- 0. P. TEEPLE.

MAcHmE FOR MAKiNG REENFORCED Box TRAYS. FILED APR. 9, 1921. 3 SHEETS'SHEET I 0. P. T'EEPLE.

3 SHEETS'SHEET 2 FILED APR. 9. 1921 MACHINE FOR MAKING REENFORCED Box TRAYs.

I" RE ERE al-HIE gan Dec. 26, 1922.

Patented cc. 26,1922.

' TES.

1,439,850 PATENT OFF-ICE.

OLIVER nmnnrrn, or BARBERTON, OHIO, Asszenon 'ro THE DIAMOND Maren COMPANY, or cnrcneo, ILLINOIS, A CORPORATION or ILLINOIS.

MACHINE FOR MAKING REENFOBCED BOX TRAYS.

Application filed April 9,

To all whom it may concern:

Be it known that I, OLIV R P. .TEEPLE, a

citizen of the United States-and resident of. Barberton, in the county of Summit and State of Ohio, have invented certain new and useful Improvements in Machines for Making .Reenforced Box Trays of which the following is a specification.

This invention relates to machines for makingreenforced box-trays, having reference especially to the machine forming the subject-matter of Letters Patent of the United States No. 1,293,288, dated February 4, 1919.

The machine described in said patent includes mechanism for intermittently feeding a strip of box stoclf, means for-producing spaced-apart recesses in the respective ,edges of the strip to provide longitudinal side laps integral with the body of the strip,

means for foldingsaid lapsupon the ad- 'jacent partsof the strip body to provide reenforced side portions, and means for transversely severing the strip between succeeding reenforced portions. Such folding means comprises vibratory arms for par.- tially folding the laps inward, stationary members for completing the folding of the laps upon the adjacent portions of the 80 strip, and a movable pressure device for acting upon the folded laps.

The present invention is in the nature'of animprove ment in or modification of the said folding me'ans with theview of ,simplifying the mechanis'm'and increasing the speed and consequently the output of the machine.

According to my invention I provide a novel cam construction which accomplishes 40 the folding and pressing of the side laps of the strip'in a rapid and efl'ective manner as the strip progresses from the lap forming to the strip severing mechanism, as willbe hereinafter described and claimed.

Inthe drawings- Figure 1' is a vertical section of a boxtray machine equipped with a lap-folding structure embodying my invention.

Fig. 2 is a lanof the said structure showing die, and also the .strip' of stock which is being acted upon; arts of the longitudinal cam bars being bro en away.

Figs. 3 to 6, inclusive, are transverse sec- 56 tions on the respective lines, 3-3, &c., of

the ad acent slitting and recessing 1921. Serial No. 459,844.-

Fig. 2, showing the progressive lap-folding operations. 1 Fig. 7 is a perspective viewof the receivmg end of the lap-folding'structure as ,detached and with the longitudinal cam bars removed, showing a progressing strip. of box stock. r

Fig. 8 is a similar view of the separate parts ofthe strip-receiving end of thestructure.

Fig.- 9 is a similar view of one of the longitudinal cam bars.

.Referring to the drawings, 11 designates a supporting frame, including the table 12.

roll of the gluepot, andthence about suitable guide rollers into the path between the die-plates 15 so as to be acted upon bytlie punches 17 atspaced intervals throughout the length of the strip. The punches are of such character as to produce in the strip longitudinalparallel slits d and lateral offsets or recesses e to define the spaced 'reinforcing side laps f, corner tongues g and end folds h for succeeding box trays. The

side portions of the strip adjacent the laps are-supplied with glue which cements the laps to the strips when they are folded over.

upon such side portions.

18' designates a (pair of intermittentlyrotatable feeding an of which longitudinal score lines 0 are formed in the strip preparatory to the action of the punches, and by which rolls the strip is intermittently fed through the diepath and along the top of the table 12, each impulse of the strip being equal to the length of a tray blank, all as fully-set forth,

in Patent No..1,293,288 aforesaid.

The improved folding devices to the action of which the reinforcing side lays f are subjected after they have passed beyond the punch anddie 7 devices, is of thefollowing constructionz- .1 19 desi ates an elongated block of inverted V- cm in cross-section having a basal plate extension 20 at one end and an angular bracket portion. 21 at the opposite end.

scoring rolls by means- This bracket is bolted to the die-plate, as at 21, so that the base of the block longitudinall overhangs the top of the table and extends in spaced parallel relation thereto, so as to provide a free passage for the strip. Secured to the oppositely-inclined faces of the block are two plates 22 the lower edges of which extend freely beyond the block and in close parallel relation to thefold lines of the respective laps f of the strip. The plates are preferably secured in place by set-screws 23, the holes 24 for which in the plates are elongated so as to permit relative adjustment of the lower edges of the plates as desired. The lower corners of the plates 22,

Secured to the table, in spaced parallel relation to each other and to the lower edges of the respective plates 22, are two longitudinall extending bars 27 having inwar l v exten ing cam portions, which are located in the longitudinal paths of the respective side laps of the strip and are so shaped as to receive the opposing laps and gradually bend them inward and downward in a manner to fold the laps upon the adjacent side portions of the progressing strip. The cam portions of the bars at their right hand or receiving end, as viewed in Fig. 2, are spaced apart sufficiently to permit the entry of the advancing side laps under the respective cam portions, as indlcated at 128, which portions gradually incline above and overlie the lower edges of the inclined side plates, as at 29, and then gradually assume a horizontal position and extend thus in spaced parallel relation to the top of the table, as at 30, and near to the transverse feeding and scoring rolls 31. These rolls are arranged in the vicinity of the vertically-reciprocative knife 32 by means of which the strip is severed into blanks designed to be subsequently formed into box trays in any suitable manner.

By the novel folding devices above de scribed it will be seen that as the strip of box stock progresses from the punch and die mechanism the outer edges of the respective laps of the strip pass between the end portions of the cam bars, and thence along the cam portions 29 of the latter, the laps thus being gradually bent toward and against the free lower edges of the plates 22 and inwardly upon the inclined faces of the lates, and that said laps when they escape t e extensions ,26 of the plates are gradually folded down and firmly pressed upon the underlying side portions of the strip for an extended interval of time. Consequently as the strip progresses the laps thereof are not only rapidly and accurately folded but they are also effectually cemented to the adjacent side portions of the strip preparatory to the severing operation of the cutting mechanism.

I claim- 1. In a box-tray machine having mechanism for-feeding a strip of material pro vided with spaced reinforcin side laps, a lap-folding structure comprising oppositely inclined plates, means supporting said plates, and parallel cam bars located in the longitudinal paths of the respective side laps of the progressing strip, each of said cam bars having a portion which gradually inclines toward and above the lower edges of the inclined plates and then gradually assumes a horizontal position and extends thus each of said cam bars having a portiom which gradually inclines toward and above the lower edges of the inclined plates and then gradually assumes a horizontal position and extends thus in close parallel relation to the strip.

3. In a box-tray machine having mechanism for feeding a strip of material provided with spaced reinforcin side laps, a lap-folding structure comprising a stationary elongated block of inverted V-form in cross-section and having a flat basal portion adjacent the path of the strip, plates secured tothe inclined surfaces of the block, the lower corners of said plates adjacent the receiving end of the structure being turned slightly upward to provide lap-guiding members and the opposite ends of said plates being extended to provide lap-supporting tongues, and parallel cam bars located in the longitudinal paths of the respective side laps, each of said cam bars having a portion which gradually inclines toward and above the lower edges of the inclined plates and then gradually assumes a horizontal position and extends'thus in close parallel rela- OLIVER P. TEEPLE. 

